Improvement in ranges



T. J.' MARCH.

RANGE.

Patented March 7 .C ...Ol 0 o o IJV'T/ENTOR gefqdb, ttm-new N.PETE"S, PHOTO-LITHOGRAMER, WASHINGTON, D C.

UNITED STATES PATENT EEICE.

THOMAS J. MARCH, oE-LIMEEIGK -STAT1oN, PENNSYLVANIA, ASSIGNOE To MARGH, BEowNBAcK ayoo., or SAME PLAGE.

IMPRovEMENgTMIN RANGES.

Specification forming part of Letters Patent N o. 174,548, dated March 7, 1876; application tiled February 10, 1876. I v

l Oven Warming-Closet Ranges; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it perv tains to make and use it, reference being had to the accompanying` drawings, which form part of this specification.

'"'V'V Figure 1 represents a vertical cross-section of my invention. Fig. 2 is a sectional view of the same, taken through line a b of Fig. 1. Fig. 3 is a partial section taken through linc c d of Fig. l, while Fig. 4 is a section of Fig. l through line e f.

This invention relates to certain improvements in double-oven warming-closet ranges, whereby the heat may be made to entirely surround both the upper and lower ovens; or, if desired, it may be cut oli" from passing beneath the lower oven, 'and caused to tlow through an intermediate or dividing line, that serves to separate the bottom and top plates of the respective upper and lower ovens; and to that end my invention consists in certain details of construction and arrangement of parts, which will more fully appear from the following description and claims.

A is the upper oven, having a horizontal llue, B, extending over its upper plate, the said lue leading from the fire-pot C to the rear descending ue D. The lower oven E is sepf arated from the upper oven A by an intervening horizontal flue, F, which connects at the rear of the ovens with the descending ue D. G is a swinging damper, hinged at g within the forward portion of the-line F, and said damper controls'an opening in the side of the range, leading into the side exit-flue H, which extends from the bottom to the top of the range. A rod, h, is attached to the damper Gr, and the other end of said rod is pivoted to the inner end ot' an oscillating lever, t', which latter freely turns on a bearing, j. By placing the Socketend of the shaker on the outer end of lever t', the damper G may be opened or closed at will. 7c is a ledge secured to the upper plate of lower oven E, and serves as a stop to limit the movement of damper G.

When damper G is thrown open, the heat passing down the descending flue D will flow through the intermediate flue F, thereby warming the bottom of oven A and the top of lower oven E, and then pass out into the exit-line H.

The rear end of 'lower oven E is provided with a descending liuc, I, which merges into the lower horizontal line J. Within the lluespace I, and preferably on a line with the upper and' lower walls K and L of the lower oven E, the perforated division-plates m and n are placed, the upper plate having large perforations n2, while the lower plate n is provided with small perforations o, the said plates serving to retain the heat for a time within the rear descending ue I. These openings are preferably of a circular form, though they may be made of rectangular or of any other desired shape, or single rectangular openings may be. substituted therefor; also, instead ot' a number of perforations in said division-plates m and n, there may be substituted in each one a long, narrow rectangular opening, making, with the liuc I, an open flue between the horizontal tlnes F and J. This rectangular opening -in each division-plate would be of equal length in both plates, but wider in plate m than in the lower plate n, in order to retain the heat for a time within the rear descending Hue I. A descending tlue, M, is formed in front of the lower oven E, and said tlue constitutes a connection between the horizontal iues F and J. Within the lower flue J flueplates r and s are arranged on each side of the exit-tlue H.

When damper G is closed, the heat passing down the descending flue D is divided into two currents, one volume passing through the intermediate flue F, and down the front descending flue M, and into the lower flue J, where it is retarded in its course by the Hue-plate r before it reaches the exit-flue H. The other volume of heat passes through the upper perforated plate m, and is slightly retarded in its progress bythe plate n, which is provided with perforations of less area than the upper plate. The heat then passes into the lowerflue, around thesue-plate s, and into the exit-flue H.

A dnstu'e, O, is formed between the rear plate of the fire-pot and front plate of the vupper oven, and the opening in said flue is controlled by an oscillating damper, P, which.

be highly heated and used as' a cookingor'v baking oven.

In order to admit of the iluespace at the right end of the lower warming-oven the rau ge may be made plain or boxed., and also the range may be made with a plain or sunk bottom, within which the lower flue is formed.

Havin g fully described my invention, whatv I -claim, and desire to secure by Letters Patent, 1s-

1. In a range, the combination, withfits upper and lower ovens, of an intermediate ue, F, and damper G, substantially as and for the purpose set forth.

2. In a range, the combination,with the upper and lower ovens, of thev ilues B, D, F, I,

J, and M and damper G, substantially as and for the-.purpose specified.

3. In a range, the combination, with an upper and lower oven and upper intermediate and lower distributing-fines, of an exit-due formed on the side of the range, having openings communicating with the intermediate and lower ilue, and a damper located in the intermediate iiue, and adapted to govern an opening in the' exit-due, substantially as and for the purpose set forth.

4. In a range, the combination of the perforated plates m and n with the lower oven E, substantially as and for the purpose specified.

5'.'The combination of the jointed rods or' levers h i with the swinging damper G and the stop k, substantially as and for the purpose set forth. f

6. The combinatiomwith the fines J and H, of the due-plates m and n, substantially as and for the 'purpose set forth.

In testimony thatV I claim the foregoing I have hereunto set my hand this 4th day of February, 1876.

- THOMAS JEFFERSON MARCH.

Witnesses:

THos. B. HALL, ALBERT W. BRIGHT. s 

